Constraints on $f(T)$ Gravity from Solar Neutrino Conversion

TL;DR

This paper uses solar neutrino data to set new observational bounds on $f(T)$ gravity, showing how torsion affects neutrino oscillations and providing a novel astrophysical test for modified gravity theories.

Contribution

It introduces the first direct observational constraints on $f(T)$ gravity parameters using neutrino oscillation data from multiple solar neutrino experiments.

Findings

Neutrino oscillations are affected by spacetime torsion in $f(T)$ gravity.

Combined solar neutrino data constrains neutrino-torsion coupling.

Results establish neutrino phenomenology as a new probe for modified gravity.

Abstract

We report new constraints on the parameters of $f(T)$ teleparallel gravity, derived from its imprints on neutrino flavor oscillations. Our analysis reveals that the presence of spacetime torsion can alter both vacuum oscillations and the matter enhanced Mikheyev Smirnov Wolfenstein (MSW) resonance. By using data from solar neutrino experiments: Super-Kamiokande, SNO, Borexino, and KamLAND, we perform a combined analysis to place the first direct observational bounds on the neutrino-torsion coupling and $f(T)$ parameters. These results establish neutrino phenomenology as a novel astrophysical probe for testing fundamental modifications of gravity.